EP1582448A3 - Bicycle crank arm - Google Patents

Bicycle crank arm Download PDF

Info

Publication number
EP1582448A3
EP1582448A3 EP05007090A EP05007090A EP1582448A3 EP 1582448 A3 EP1582448 A3 EP 1582448A3 EP 05007090 A EP05007090 A EP 05007090A EP 05007090 A EP05007090 A EP 05007090A EP 1582448 A3 EP1582448 A3 EP 1582448A3
Authority
EP
European Patent Office
Prior art keywords
mounting end
crank arm
end portion
bicycle crank
pedal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05007090A
Other languages
German (de)
French (fr)
Other versions
EP1582448A2 (en
Inventor
Toru Iwai
Masaaki Hara
Mitsutoshi Uchida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimano Inc
Original Assignee
Shimano Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimano Inc filed Critical Shimano Inc
Publication of EP1582448A2 publication Critical patent/EP1582448A2/en
Publication of EP1582448A3 publication Critical patent/EP1582448A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00—Construction of cranks operated by hand or foot
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/86—Making other particular articles other parts for bicycles or motorcycles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2164—Cranks and pedals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

A bicycle crank arm 10 is provided that is a light, highly strong, highly rigid and highly designed in a complex shape. The bicycle crank arm 10 has a crank axle mounting end portion 12, a central crank body portion 14 and a pedal mounting end portion 16. The hollow bicycle crank arm 10 is preferably a one-piece, unitary member that is produced by a tube hydroforming method. The hollow bicycle crank arm 10 has a crank axle attachment part 26 located within the crank axle mounting end portion 12 and a pedal spindle attachment part 36 located within the pedal mounting end portion 16. The mounting end portions 12, 16 have a crank axle hole 24 and a pedal spindle hole 34, respectively, with outside diameters that are smaller than the attachment parts 26, 36, respectively.
EP05007090A 2004-03-31 2005-03-31 Bicycle crank arm Withdrawn EP1582448A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004105277 2004-03-31
JP2004105277A JP2005289166A (en) 2004-03-31 2004-03-31 Crank for bicycle, and its manufacturing method

Publications (2)

Publication Number Publication Date
EP1582448A2 EP1582448A2 (en) 2005-10-05
EP1582448A3 true EP1582448A3 (en) 2007-05-30

Family

ID=34880067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05007090A Withdrawn EP1582448A3 (en) 2004-03-31 2005-03-31 Bicycle crank arm

Country Status (5)

Country Link
US (1) US20050217417A1 (en)
EP (1) EP1582448A3 (en)
JP (1) JP2005289166A (en)
CN (1) CN1676413A (en)
TW (1) TWI258445B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4819305B2 (en) * 2003-09-04 2011-11-24 日産自動車株式会社 Method for manufacturing reinforcing member
US8459077B2 (en) * 2005-02-15 2013-06-11 Nsk Ltd. Manufacturing method for metal member with through hole
ATE471274T1 (en) * 2005-12-02 2010-07-15 Campagnolo Srl CRANK UNIT FOR THE BOTTOM BEARING, DRIVE SHAFT AND PEDAL CRANK OF A BICYCLE
ATE524374T1 (en) * 2006-02-20 2011-09-15 Campagnolo Srl BICYCLE BOTTOM BEARING
EP1829779B1 (en) * 2006-03-03 2011-01-12 CAMPAGNOLO S.r.l. Bicycle bottom bracket assembly and adapter device for such an assembly
JP2007297040A (en) * 2006-05-04 2007-11-15 Campagnolo Spa Crank arm assembly for bicycle
US7530291B2 (en) * 2006-07-13 2009-05-12 Chang Hui Lin Crank device for bicycle
ITMI20070406U1 (en) * 2007-12-05 2009-06-06 Campagnolo Srl ASSEMBLY OF CENTRAL MOVEMENT OF BICYCLE AND TREE FOR A SUCH ASSEMBLY
EP2110301B1 (en) * 2008-04-17 2014-12-24 CAMPAGNOLO S.r.l. Assembly of bicycle components in mutual rotation and bicycle comprising such an assembly
US8992358B2 (en) 2009-02-27 2015-03-31 Borgwarner Inc. Automotive timing chain system component and method thereof
EP2985214A3 (en) 2009-03-16 2016-03-30 Cycling Sports Group, Inc. Unitary crown fork assembly and method of fabrication
EP2230167A3 (en) * 2009-03-19 2013-10-02 Cycling Sports Group, Inc. Bicycle crank shaft assembly
US20110247455A1 (en) * 2010-04-13 2011-10-13 Robert Densmore Crank arm protector
US8616085B2 (en) * 2010-08-18 2013-12-31 Shimano Inc. Bicycle crank assembly
WO2014164060A1 (en) * 2013-03-12 2014-10-09 Cycling Sports Group, Inc. Crank spindle assembly and method of fabrication
US10562588B2 (en) 2015-09-01 2020-02-18 The Hive Global, Inc Bicycle cassette with locking connection
WO2017165226A1 (en) 2016-03-24 2017-09-28 The Hive Global, Inc. Bicycle crank with spindle attachment structure
US11351815B2 (en) 2017-08-21 2022-06-07 The Hive Global, Inc. Bicycle cassette with clamping connection
TWI625178B (en) * 2017-11-15 2018-06-01 亞獵士科技股份有限公司 Method for manufacturing crank set of bicycle pedal
US10625815B2 (en) * 2017-12-08 2020-04-21 Alex Global Technology, Inc. Method for manufacturing bicycle crank
US11932351B2 (en) 2020-07-17 2024-03-19 The Hive Global, Inc. Conical bicycle cassette sprocket structure
US12030586B2 (en) 2021-07-12 2024-07-09 The Hive Global, Inc. Seal for bicycle crank with differential chainring motion

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2350468A (en) * 1941-11-04 1944-06-06 Murray Ohio Mfg Co Bicycle crank hanger assembly
EP0270388A1 (en) * 1986-10-31 1988-06-08 Look Sté. Pedal crank for a bicycle
DE19601125A1 (en) * 1996-01-13 1997-07-17 Thun Alfred & Co Gmbh Pedal crank for a bicycle
WO1998057840A1 (en) * 1997-06-18 1998-12-23 Raphael Schlanger Bicycle crankshaft assembly
US5924336A (en) * 1993-12-16 1999-07-20 Richardson; Brian E. Hollow bicycle crankshaft
DE20001037U1 (en) * 2000-01-21 2000-03-30 Leng, Chi Chih, Nan Tou Bicycle crank arm
DE20001036U1 (en) * 2000-01-21 2000-04-20 Leng, Chi Chih, Nan Tou Bicycle crank arm
US6195894B1 (en) * 1996-12-27 2001-03-06 Shimano, Inc. Bicycle crank and method for manufacturing same
US6266990B1 (en) * 2000-09-06 2001-07-31 William Blair Shook Method for integrally manufacturing an one-piece forged hollow crank of a bicycle
EP1120336A2 (en) * 2000-01-26 2001-08-01 Cannondale Corporation Integrated crank assembly and components therefor
US6314834B1 (en) * 1999-01-25 2001-11-13 Truvativ International Co., Ltd. Hollow crank arm
EP1270393A1 (en) * 2001-06-27 2003-01-02 Campagnolo S.R.L. Bicycle crank and method for manufacturing said crank
US6508002B1 (en) * 2000-11-22 2003-01-21 Douglas Chiang Bicycle crank arm and method of making same
US6513407B1 (en) * 1999-09-24 2003-02-04 Lattimore & Tessmer, Inc. Integrated lever assembly
US20030172532A1 (en) * 2002-03-15 2003-09-18 Cheng-Xun Jiang Method for making hollow bicycle cranks
EP1350714A1 (en) * 2002-03-19 2003-10-08 Campagnolo Srl Hollow crank arm for a bicycle, and process for manufacturing the same
EP1378433A1 (en) * 2002-07-05 2004-01-07 Joris Van Raemdonck Hollow bicycle crank

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US602049A (en) * 1898-04-12 Bicycle crank-shaft
US737603A (en) * 1903-02-16 1903-09-01 Jacob S Fritz Crank-arm connection.
US2305468A (en) * 1942-10-07 1942-12-15 Ferrigno Jerome Indoor wind breaker
US3648542A (en) * 1969-05-31 1972-03-14 Dino Perotti Pedal link assembly for bicycles
DE2359437A1 (en) * 1973-11-09 1975-06-05 Alfred Thun BICYCLE PEDAL
US4171822A (en) * 1978-01-10 1979-10-23 Firma Alfred Thun & Co. Gmbh Dual pedal crank assembly for bicycle
US4358967A (en) * 1980-06-23 1982-11-16 Kastan B Linn Foot operated crank assembly
US4704919A (en) * 1984-11-28 1987-11-10 Durham Roger O Two-piece crankshaft for bicycles
US5010785A (en) * 1990-06-11 1991-04-30 Seattle Bike Supply Crank arm for a bicylce
US5363721A (en) * 1993-08-23 1994-11-15 Hsiao Chia Yuan Bicycle pedal crank dismounting device
US5493937A (en) * 1993-08-23 1996-02-27 Edwards; Craig H. Light-weight bicycle crankshaft assembly utilizing two-piece axle integrally joined to crank arms

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2350468A (en) * 1941-11-04 1944-06-06 Murray Ohio Mfg Co Bicycle crank hanger assembly
EP0270388A1 (en) * 1986-10-31 1988-06-08 Look Sté. Pedal crank for a bicycle
US5924336A (en) * 1993-12-16 1999-07-20 Richardson; Brian E. Hollow bicycle crankshaft
DE19601125A1 (en) * 1996-01-13 1997-07-17 Thun Alfred & Co Gmbh Pedal crank for a bicycle
US6195894B1 (en) * 1996-12-27 2001-03-06 Shimano, Inc. Bicycle crank and method for manufacturing same
WO1998057840A1 (en) * 1997-06-18 1998-12-23 Raphael Schlanger Bicycle crankshaft assembly
US6314834B1 (en) * 1999-01-25 2001-11-13 Truvativ International Co., Ltd. Hollow crank arm
US6513407B1 (en) * 1999-09-24 2003-02-04 Lattimore & Tessmer, Inc. Integrated lever assembly
DE20001037U1 (en) * 2000-01-21 2000-03-30 Leng, Chi Chih, Nan Tou Bicycle crank arm
DE20001036U1 (en) * 2000-01-21 2000-04-20 Leng, Chi Chih, Nan Tou Bicycle crank arm
EP1120336A2 (en) * 2000-01-26 2001-08-01 Cannondale Corporation Integrated crank assembly and components therefor
US6266990B1 (en) * 2000-09-06 2001-07-31 William Blair Shook Method for integrally manufacturing an one-piece forged hollow crank of a bicycle
US6508002B1 (en) * 2000-11-22 2003-01-21 Douglas Chiang Bicycle crank arm and method of making same
EP1270393A1 (en) * 2001-06-27 2003-01-02 Campagnolo S.R.L. Bicycle crank and method for manufacturing said crank
US20030172532A1 (en) * 2002-03-15 2003-09-18 Cheng-Xun Jiang Method for making hollow bicycle cranks
EP1350714A1 (en) * 2002-03-19 2003-10-08 Campagnolo Srl Hollow crank arm for a bicycle, and process for manufacturing the same
EP1378433A1 (en) * 2002-07-05 2004-01-07 Joris Van Raemdonck Hollow bicycle crank

Also Published As

Publication number Publication date
TWI258445B (en) 2006-07-21
CN1676413A (en) 2005-10-05
EP1582448A2 (en) 2005-10-05
TW200538350A (en) 2005-12-01
JP2005289166A (en) 2005-10-20
US20050217417A1 (en) 2005-10-06

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